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On the origin of the various types of radio emission in GRS 1915+105

S. V. Vadawale·A. R. Rao·S. Naik·J. S. Yadav·C. H. Ishwara-Chandra·A. Pramesh Rao·G. G. Pooley
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Abstract

We investigate the association between the radio ``plateau'' states and the large superluminal flares in GRS 1915+105 and propose a qualitative scenario to explain this association. We identify several candidate superluminal flare events from available monitoring data on this source and analyze the contemporaneous RXTE pointed observations. We detect a strong correlation between the average X-ray flux during the ``plateau'' state and the total energy emitted in radio during the subsequent radio flare. We find that the sequence of events is similar for all large radio flares with a fast rise and exponential decay morphology. Based on these results, we propose a qualitative scenario in which the separating ejecta during the superluminal flares are observed due to the interaction of the matter blob ejected during the X-ray soft dips, with the steady jet already established during the ``plateau'' state. This picture can explain all types of radio emission observed from this source in terms of its X-ray emission characteristics.

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S. V. Vadawale, A. R. Rao, S. Naik, J. S. Yadav, C. H. Ishwara-Chandra, A. Pramesh Rao, G. G. Pooley. 2003-08-07. On the origin of the various types of radio emission in GRS 1915+105. https://doi.org/10.1086/378672

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